a = 1
print(type(a))

b = 0.5
print(b)
print(type(b))

str1 = "hello1"
print(str1)
str2 = 'hello2'
print(str2)
print(type(str1))

str3 = 'My name is "zhangsan"'
print(str3)
str3 = "My name is 'zhangsan'"
print(str3)
str3 = ''' "My name is 'zhangsan'" '''
print(str3)

print(len(str1))

a1 = "hello "
a2 = "world"
print(a1 + a2)

c = True
print(c)
print(type(c))